Code N230-1 (Castle Beige) reflects 68% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Castle Beige (N230-1) registers J'=87.9, a'=1.57, and b'=4.69 with HSL (30°, 26%, 84%) and Helmholtz-Kohlrausch perceived value 86.3 L*_HK. Because N230-1 carries a*=1.92 red-green and b*=6.78 yellow-blue balance at chroma C*=7.05, Castle Beige projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Behr N230-1 predictably. Under 5000K noon daylight, Castle Beige (N230-1) holds its native #E7D4C2 swatch; at 4000K cool office LED, N230-1 adapts to #EED2B9; at 3500K halogen, Castle Beige transitions to #F3D1B3; at 3000K residential LED, N230-1 warms to #F9CFAE; and under 2700K evening bulbs, Castle Beige (N230-1) settles at #FDCEAB.
When cross-matching Behr Castle Beige (N230-1, #E0D5CA), Benjamin Moore Frosted Toffee (988, #DED3C6, LRV 66.37%) scores ΔE2000=1.07 and CAM16=0.99, followed by Featherstone (1002, ΔE=1.12). In Sherwin-Williams, Kestrel White (SW 7516, #E0D6C8, LRV 68.29%) achieves ΔE2000=1.66 ahead of Reticence (SW 6064, ΔE=2). Coordinate N230-1 with Ultra Pure White® (UPW) ceilings, Vibrant White (BWC-12) trim, Spice Delight (PWL-81) hallways, and Ultra Pure White 1850 (1850) accents.